728104473 has 12 divisors (see below), whose sum is σ = 1052111268. Its totient is φ = 485216160.

The previous prime is 728104457. The next prime is 728104501. The reversal of 728104473 is 374401827.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 339738624 + 388365849 = 18432^2 + 19707^2 .

It is not a de Polignac number, because 728104473 - 2⁴ = 728104457 is a prime.

It is a super-2 number, since 2×728104473² = 1060272247205215458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728104973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11611 + ... + 39887.

It is an arithmetic number, because the mean of its divisors is an integer number (87675939).

Almost surely, 2^728104473 is an apocalyptic number.

It is an amenable number.

728104473 is a deficient number, since it is larger than the sum of its proper divisors (324006795).

728104473 is a wasteful number, since it uses less digits than its factorization.

728104473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31144 (or 31141 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 728104473 is about 26983.4110705077. The cubic root of 728104473 is about 899.6313193628.

The spelling of 728104473 in words is "seven hundred twenty-eight million, one hundred four thousand, four hundred seventy-three".